ACG is pretty good. There are some "Ringers" on the site (Ladies that are not truely available). Their prices are decent, and you will meet some very attractive ladies. Their socials are generally not so well attended. I think the way to go is to purchase a few emails in advance and attempt correspondence that way first. Many times when using an agency the problem is that the women pictured on the site are not all really available, so keep your expectations reasonable and you will be happier.
Cali Charm is the exception in Cali. All their girls are available, I say this based on the reports of others and what I saw firsthand while I was staying there.
Good luck sir,
Fathertime!